. >> will this be a game-changer in the election? >>> and "i'm not perfect." arnold schwarzenegger about his marriage, his affairs and the child he fathered with his house keeper. >> i inflicted pain on maria and unbelievable pain on the kids. >> he prepares to release his tell-all memoir today, monday, october 1, 2012. >>> from nbc news, this is "today" with matt lauer and savannah guthrie. live, from studio 1-a in rockefeller plaza. >> and good morning, welcome to "today" on a monday morning, i'm savannah guthrie. >> i'm david gregory in for matt this morning. >>> the taliban is claiming responsibility for the deadly suicide bombing in eastern afghanistan overnight. >> they were targeting a military patrol in a crowded market. as we said, at least 14 people were killed, 3 americans among the dead. dozens were wounded. this comes one day after the u.s. military death toll in the war reached 2,000. we're going to get a live report, straight ahead. >>> also coming up, a remarkable story. a mom of three and a former beauty queen suffers a traumatic brain injury.